Fifth metatarsal repair systems and methods of use

ABSTRACT

The present application relates to repair systems, and more particularly to fifth metatarsal repair systems and methods of use. The repair systems described herein can include a fixation device with a threaded section. The repair systems described herein can include one or more grippers designed to be deflected outward to grip the sidewalls of an intramedullary canal of the fifth metatarsal. The repair systems described herein can include an end cap. The end cap can include a fastener including thread designed to engage the threaded section of the fixation device. The end cap can include a cap designed to move relative to the fastener.

BACKGROUND Field

Embodiments of the present application relate to repair systems, tools,and methods for providing reinforcement of bones. More specifically, thepresent application relates to repair systems, tools, and methods forproviding reconstruction and reinforcement of the fifth metatarsal.

Description of the Related Art

Bone fractures are a common medical condition both in the young and oldsegments of the population. As one example, sports and work-relatedaccidents account for a significant number of bone fractures seen inemergency rooms among all age groups. Further, the acceptance andubiquitous application of passive restraint systems in automobiles hascreated greater numbers of non-life threatening fractures. In the past,a person that might expire from a serious automobile accident nowsurvives with multiple traumas and resultant fractures. With anincreasingly aging population, osteoporotic fractures have increased.Osteoporosis and osteoarthritis are among the most common conditions toaffect the musculoskeletal system, as well as frequent causes oflocomotor pain and disability. The National Osteoporosis Foundationestimates that as many as 44 million Americans are affected byosteoporosis and low bone mass, leading to fractures in more than300,000 people over the age of 65.

One current treatment of bone fractures includes surgically resettingthe fractured bone. After the surgical procedure, the fractured area ofthe body (i.e., where the fractured bone is located) is often placed inan external cast for an extended period of time to ensure that thefractured bone heals properly. This can take several months for the boneto heal and for the patient to remove the cast before resuming normalactivities.

In some instances, an intramedullary (IM) rod or nail is used to alignand stabilize the fracture. In that instance, a metal rod is placedinside a canal of a bone and fixed in place, typically at both ends.See, for example, Fixion™ IM (Nail), www.disc-o-tech.com. Placement ofconventional IM rods are typically a “line of sight” and require accesscollinear with the center line of the IM canal. Invariably, this line ofsight access violates, disrupts, and causes damage to important softtissue structures such as ligaments, tendons, cartilage, fascia, andepidermis. This approach requires incision, access to the canal, andplacement of the IM nail. The nail can be subsequently removed or leftin place. A conventional IM nail procedure requires a similar, butpossibly larger, opening to the space, a long metallic nail being placedacross the fracture, and either subsequent removal, or when the nail isnot removed, a long term implant of the IM nail. The outer diameter ofthe IM nail must be selected for the minimum inside diameter of thespace. Therefore, portions of the IM nail may not be in contact with thecanal. Further, micro-motion between the bone and the IM nail may causepain or necrosis of the bone. In still other cases, infection can occur.The IM nail may be removed after the fracture has healed. This requiresa subsequent surgery with all of the complications and risks of a laterintrusive procedure. In general, rigid IM rods or nails are difficult toinsert, can damage the bone and require additional incisions forcross-screws to attach the rods or nails to the bone.

SUMMARY

The repair systems, tools, and methods have several features, no singleone of which is solely responsible for its desirable attributes. Withoutlimiting the scope as expressed by the claims that follow, the moreprominent features of the systems and methods will now be discussedbriefly. After considering this discussion, and particularly afterreading the section entitled “Detailed Description” one will understandhow the features of the systems and methods provide several advantagesover other devices.

One of the advantages of embodiments of the repair systems describedherein include that the repair systems are simple, intuitive systems.The repair systems advantageously have few parts, making the repairsystems robust and cost-effective to manufacture.

The repair systems can be used in a variety of surgeries, such asminimally invasive surgery. For instance, in various embodiments, therepair systems can be used in all surgeries, and in particularembodiments, the repair systems are favorable in the repair of the fifthmetatarsal, including fractures of the fifth metatarsal.

In some embodiments, a repair system is provided. The repair system caninclude a fixation device. The fixation device can include an elongatebody configured to be inserted within a fifth metatarsal, the elongatebody comprising a threaded section. The fixation device can include oneor more grippers configured to be deflected outward to grip thesidewalls of a canal of the fifth metatarsal. The repair system caninclude an end cap. The end cap can include a fastener comprising threadconfigured to engage the threaded section of the fixation device. Theend cap can include a cap, wherein the cap is configured to moverelative to the fastener.

In some embodiments, the elongate body comprises a bend. In someembodiments, the end cap is configured for intra-operative compression.In some embodiments, the fastener head is captive within the cap. Insome embodiments, the cap is configured for polyaxial movement relativeto the fastener. In some embodiments, the cap is configured to rotaterelative to the fastener. In some embodiments, the cap comprises atapered external surface. In some embodiments, the cap comprises acylindrical boss. In some embodiments, the thread of the fastener isconfigured to extend distally from the cap when the fastener is disposedwithin the cap, further comprising a projection extending distally fromthe cap. In some embodiments, the cap comprises one or more groovesconfigured to self-tap into the fifth metatarsal. In some embodiments,the thread of the fastener is configured to extend distally from the capwhen the fastener is disposed within the cap, the cap further comprisingone or more hooks extending proximally.

In some embodiments, a method of using a repair system is provided. Themethod can include the step of inserting a fixation device within acanal of a fifth metatarsal. The method can include the step ofselecting an end cap comprising a cap and a fastener. The method caninclude the step of coupling the end cap to the fixation device byengaging the fastener with a lumen of the fixation device. The methodcan include the step of adjusting the position of the end cap relativeto the fixation device to apply intra-operative compression to one ormore segments of the fifth metatarsal.

The method can include the step of limiting a depth of a counter borebased on the end cap. In some embodiments, limiting the depth of thecounter bore comprises abutting a stop of a reamer with a portion of adrill guide. The method can include the step of limiting a depth ofinsertion of the fixation device based on the end cap. In someembodiments, limiting the depth of insertion of the fixation devicecomprises abutting a sleeve of an insertion tool with the anatomy of apatient. In some embodiments, limiting the depth of insertion of thefixation device comprises pulling and rotating a sleeve of an insertiontool to select the depth of insertion. The method can include the stepof actuating a gripper to secure the fixation device within theintramedullary canal of the fifth metatarsal. The method can include thestep of rotating the cap relative to the fastener after coupling the endcap to the fixation device. The method can include the step of anglingthe cap relative to the fastener after coupling the end cap to thefixation device.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects, and advantages of the repair systems,tools, and methods disclosed herein are described below with referenceto the drawings of embodiments, which are intended to illustrate and notto limit the present application. Additionally, from figure to figure,the same reference numerals have been used to designate the samecomponents of an illustrated embodiment. The following is a briefdescription of each of the drawings.

FIG. 1 is a perspective view of an embodiment of a fixation device;

FIG. 2 is a cross-sectional view of the fixation device of FIG. 1;

FIG. 3 is a distal view of the fixation device of FIG. 1;

FIG. 4 is a distal view of the fixation device of FIG. 1 with one ormore grippers deployed;

FIG. 5 is a cross-sectional view of the fixation device of FIG. 4;

FIG. 6 is a perspective view of a repair system including the fixationdevice of FIG. 1 and a first embodiment of an end cap;

FIG. 7 is a perspective view of the end cap of FIG. 6;

FIG. 8 is a cross-sectional view of the end cap of FIG. 6;

FIG. 9 is a perspective view of a second embodiment of an end cap;

FIG. 10 is a side view of the end cap of FIG. 9;

FIG. 11 is a perspective view of a third embodiment of an end cap;

FIG. 12 is a side view of the end cap of FIG. 11;

FIG. 13 is a perspective view of a fourth embodiment of an end cap;

FIG. 14 is a side view of the end cap of FIG. 13;

FIG. 15 is a perspective view of a fifth embodiment of an end cap;

FIG. 16 is a side view of the end cap of FIG. 15;

FIG. 17 is a perspective view of an insertion tool;

FIG. 18 is a side view of the insertion tool of FIG. 17;

FIG. 19 is a cross-sectional view of components of the insertion tool ofFIG. 17;

FIG. 20 is a perspective view of components of the insertion tool ofFIG. 19 in a standard position;

FIG. 21 is a perspective view of components of the insertion tool ofFIG. 19 in a long position;

FIG. 22 is a perspective view of components of the insertion tool ofFIG. 19 in the long position;

FIG. 23 is a perspective view of a drill guide;

FIG. 24 is a side view of the drill guide of FIG. 23 in a standardposition;

FIG. 25 is a top view of the drill guide of FIG. 23 in the standardposition;

FIG. 26 is a side view of the drill guide of FIG. 23 in the standardposition with a reamer;

FIG. 27 is a top view of the drill guide of FIG. 23 in a long position;

FIG. 28 is a side view of the drill guide of FIG. 23 in the longposition;

FIG. 29 is a cross-sectional view of the drill guide of FIG. 23 in thestandard position;

FIG. 30 is another view of the drill guide of FIG. 23;

FIG. 31 is a perspective view of the drill guide of FIG. 23;

FIG. 32 illustrates a method step for establishing an entry point in amethod to install a repair system;

FIGS. 33A-33B illustrates method steps of using a reamer in a method toinstall a repair system;

FIGS. 34A-B illustrates method steps of reaming to a distal portion in amethod to install a repair system;

FIGS. 35A-B illustrates method steps of inserting the fixation device ina method to install a repair system;

FIG. 36 illustrates a method step of deploying one or more grippers in amethod to install a repair system;

FIG. 37 illustrates a method step of inserting a guide wire in a methodto install a repair system;

FIG. 38A-38B illustrates method steps of inserting an end cap in amethod to install a repair system;

FIG. 39A-39B illustrates method steps of inserting different end caps ina method to install a repair system;

FIG. 40 is a view of a method step of removing an end cap in a method toremove a repair system;

FIG. 41 illustrates a method step of attaching an insertion tool in amethod to remove a repair system;

FIG. 42 illustrates a method step of inserting a shaft of an actuationdriver in a method to remove a fixation device;

FIG. 43 illustrates a method step of collapsing one or more grippers ina method to remove a repair system;

FIG. 44 illustrates a method step of pulling a fixation device in amethod to remove a repair system.

DETAILED DESCRIPTION

FIGS. 1 and 2 are perspective views of the fixation device 100. Thefixation device 100 can include a proximal end 102 (near the user) and adistal end 104 (further from the user). The proximal end 102 and thedistal end 104 can refer to the position of an end of the fixationdevice 100 relative to the remainder of the fixation device 100 orrelative to the opposing end as it appears in the drawings. The proximalend 102 can refer to the end that is manipulated by the user. The distalend 104 can refer to the end that is inserted and advanced within thebone. The use of proximal and distal can change in another context, forinstance in an anatomical context in which proximal and distal arerelative to the patient, or where the entry point is distal from theuser.

The fixation device 100 can include a longitudinal axis 106 extendingfrom the distal end 104 toward the proximal end 102. In the illustratedembodiment, the fixation device 100 is bent or curved. The proximal end102 of the fixation device 100 can deviate from the longitudinal axis106. In some embodiments, the enclosed angle between the proximal end102 the longitudinal axis 106 is approximately 10 degrees but otherconfigurations are contemplated (e.g., 1 degree, 2 degrees, 3, degrees,4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70degrees, 75 degrees, 80 degrees, 85 degrees, 90 degrees, between 1 and10 degrees, between 1 and 20 degrees, between 1 and 30 degrees, greaterthan 5 degrees, greater than 10 degrees, greater than 15 degrees,greater than 20 degrees, less than 20 degrees, less than 15 degrees,less than 10 degrees, etc.) The fixation device 100 can be considered anintramedullary nail. The fixation device 100 can be designed for thefixation of fifth metatarsal fractures. The fixation device 100 can bedesigned for insertion into the medullary canal of the fifth metatarsal.The fixation device 100 can be designed for insertion through a proximalentry portal created at the tip of the proximal tuberosity, as describedherein.

The fixation device 100 can include a distal portion 110. The distalportion 110 can extend from the distal end 104 toward the proximal end102. The distal portion 110 can include a tip section 112. The tipsection 112 can be considered the insertion section. The tip section 112can be located near the distal end 104. In the illustrated embodiment,the tip section 112 comprises a tapered tip. In some embodiments, thetip section 112 can be tapered inward toward the longitudinal axis 106.In some embodiments, the tip section 112 can be a cover at the distalend 104 of the fixation device 100. The tip section 112 can act as ablunt obturator. The tip section 112 can facilitates penetration ofbone, such as penetration of an intramedullary canal by the fixationdevice 100.

The distal portion 110 can include one or more grippers 114. The one ormore grippers 114 can be considered a bone engaging mechanism. The oneor more grippers 114 can engage the fifth metatarsal of a patient whenplaced in the intramedullary canal within a post fractured bone. The oneor more grippers 114 can be deployed radially outward against the wallof the intramedullary canal or other canal such as a reamed canal. Onentry into the canal, the one or more grippers 114 can be flat andretracted. Upon deployment, the one or more grippers 114 can pivotradially outward from the distal portion 110 to grip the fifthmetatarsal from the inside of the bone. In the illustrated embodiment,the fixation device 100 can include three grippers 114. Otherconfigurations are contemplated (e.g., one gripper, two grippers, threegrippers, four grippers, five grippers, six grippers, etc.). In theillustrated embodiment, the one or more grippers 114 are disposedcircumferentially around the distal portion 110. In the illustratedembodiment, the one or more grippers 114 are equally spaced around thecircumference of the distal portion 110.

The fixation device 100 can include one or more bent sections 116. Theone or more bent sections 116 can angle the fixation device 100. The oneor more bent sections 116 can allow the fixation device 100 to moreclosely match the anatomy of the fifth metatarsal. In the illustratedembodiment, the fixation device 100 can include two bent sections 116.The lateral bend of the fixation device 100 can be designed accommodatethe lateral entry position on the proximal tuberosity. A traditional,straight intramedullary nail necessitates an entry point that attemptsto linearize the bone. A straight intramedullary nail may require theuser to select an entry point that is medial and dorsal to thetuberosity (e.g., “high and tight”). A straight intramedullary nail mayrequire the user to select an entry point that allows the screw to bethreaded into the bone canal. The lateral entry point of the proximaltuberosity can be easier to identify and access as it is palpable underthe skin.

The fixation device 100 can include a hub 120. The hub 120 can berigidly coupled to the distal portion 110 via the one or more bentsections 116. In the illustrated embodiment, the distal portion 110 andthe hub 120 are not coaxial. The hub 120 can include an engagementmember 122. The engagement member 122 can be designed to engage aninsertion tool, or a portion of an insertion tool, as described herein.

The fixation device 100 can be generally cylindrical. The distal portion110 can have a smaller diameter than the hub 120. The one or more bentsections 116 can transition the fixation device 100 from the smallerdiameter of the distal portion 110 to the larger diameter of the hub120.

FIG. 2 is a cross-sectional view of the fixation device 100. Thefixation device 100 can include a lumen 124. The lumen 124 can extendfrom the proximal end 102 to the distal end 104. The fixation device 100can include an actuator 126. The actuator 126 can be designed to deploythe one or more grippers 114. The actuator 126 can include an elongatemember 130. The elongate member 130 can include at least one bend inorder to be disposed within the one or more bent sections 116. Theelongate member 130 can have a reduced diameter to accommodate the bendin the fixation device 100. The elongate member 130 can include a thread132. The fixation device 100 can include an actuator head 134. Theactuator head 134 can engage the thread 132 of the elongate member 110.The actuator 126 can include a socket 136. The socket 136 can allow theactuator 126 to be rotated. The actuator head 134 can be a wedge. Theactuator head 134 can be indexed with a window 128 of the fixationdevice 100, as shown in FIG. 3. The actuator 126 can be rotated.Rotation of the actuator 126 can cause axial translation of the actuatorhead 134.

During actuation, the one or more grippers 114 are urged radiallyoutward by a ramped surface on the actuator head 134. As an actuationdriver (not shown) turns the actuator 126, the thread 132 of theelongate member 130 rotates in relation to the actuator head 134. Thiscauses the actuator head 134 to be drawn in a proximal direction towardthe proximal end 102 of the fixation device 100 as the actuator head 134traverses the thread 132 of the elongate member 130. The ramped surfaceon the actuator head 134 outwardly actuates one or more grippers 114.The fixation device 100 may include a bearing surface 138. The bearingsurface 138 can be a washer. The fixation device 100 may include a stop140 to prevent translation of the actuator 126. In some embodiments, thestop 140 proximal to the actuator 126 resists back out of the actuatorwhen collapsing the one or more grippers 114.

FIG. 3 shows the one or more grippers 114 prior to deployment. Thefixation device 100 can be inserted into the bone in the configurationshown in FIG. 3. The one or more grippers 114 can be the same diameteras the diameter of the distal portion 110.

FIG. 4 shows the one or more grippers 114 after deployment. The fixationdevice 100 can grip the sides of the canal of the fifth metatarsal inthe configuration shown in FIG. 4. The one or more grippers 114 can be alarger diameter than the diameter of the distal portion 110.

FIG. 5 shows a cross-sectional view of the one or more grippers 114after deployment. As described herein, the actuation driver can berotated to rotate the socket 136 of the actuator 126. The actuator head134 can be drawn in a proximal direction toward the proximal end 102 ofthe fixation device 100 when actuator head 134 traverses the thread 132of the elongate member 130. The ramped surface on the actuator head 134outwardly actuates one or more grippers 114. The stop 140 can preventtranslation of the actuator 126 during rotation of the actuator 126. Theone or more grippers 114 can be deployed in the intramedullary canal tolock the position of the fixation device 100.

As described herein, the fixation device 100 can include the lumen 124.The lumen 124 can extend from the proximal end 102 to the distal end104. The lumen 124 can include a threaded portion 142. The threadedportion 142 can be positioned proximal to the stop 140. The threadedportion 142 can be positioned proximal to the actuator 126. The threadedportion 142 can be positioned proximal to the one or more bent sections116. The threaded portion 142 can be positioned within the hub 120.

The threaded portion 142 can include a first threaded section 144. Thethreaded portion 142 can include a second threaded section 146. Thediameter of the second threaded section 146 can be larger than thediameter of the first threaded section 144. The first threaded section144 can be located distally to the second threaded section 146. Thethread of the first threaded section 144 can be different than thethread of the second threaded section 146. The first threaded section144 can include a thread over the entire first threaded section 144, ora portion thereof. The second threaded section 146 can include a threadover the entire second threaded section 146, or a portion thereof. Thefirst threaded section 144 can include a right handed thread. The secondthreaded section 146 can include a right handed thread. The firstthreaded section 144 and the second threaded section 146 can have thesame handed threaded or an opposite handed thread (e.g., the firstthreaded section 144 can be right handed and the second threaded section146 can be left handed). The threaded portion 142 can include one ormore sections between the first threaded section 144 and the secondthreaded section 146. The one or more section can be threaded ornon-threaded.

FIG. 6 shows a repair system 200. The repair system 200 can include thefixation device 100 and any of the end caps described herein.

The repair system 200 can be designed for insertion of the fixationdevice 100 into the medullary canal after the bone is adequatelyprepared. The fixation device 100 can be counter sunk inside the boneusing an insertion tool, as described herein. After the fixation device100 is properly positioned within the bone, the one or more grippers 114are expanded into the canal by engaging the actuator 126, as describedherein. The counter sinking allows intra-operative compression to beapplied to the fracture by means of an end cap. The end caps describedherein can be inserted into the hub 120 of the fixation device 100. Theone or more grippers 114 can be located at a distal position of therepair system and the end caps can be located at a proximal position.The end caps described herein include a fastener and a cap. The fastenercan be captive within the cap, as described herein. The fastener and thecap can have relative movement, such as translation, rotation and/orpolyaxial movement. The end caps can be designed to contact the proximalfragment of the fifth metatarsal. In some embodiments, the cap does notimpart rotation on the proximal fragment. The shape of the fastener headand the matching interior surface of the cap allows the cap to pivotabout the fastener to accommodate moderate angulation, as describedherein. Multiple end cap configurations are possible, as describedherein.

In the illustrated embodiment of FIG. 6, the repair system 200 includesend cap 202. FIG. 7 shows a perspective view of the end cap 202. FIG. 8shows a cross-sectional view of the end cap 202. In the illustratedembodiment, the end caps described herein can include a fastener 204.The fastener 204 can include a thread 206. The thread 206 can engage thefirst threaded section 144 of the fixation device 100. The fastener 204can include a longitudinal axis 208. The fastener 204 can include afastener head 210. The fastener head 210 can include a socket 212. Thesocket 212 can be disposed within the fastener head 210. The socket 212can allow the fastener 204 to be rotated.

The fastener 204 can be rotated to apply compression to one or more bonefragments. The fastener 204 can be rotated to shorten the repair system200. As one example, rotation of the fastener 204 in one direction canmove the fastener 204 toward the distal end 104 of the fixation device100. As another example, rotation of the fastener 204 in the oppositedirection can move the fastener 204 away from the distal end 104 of thefixation device 100.

The end cap 202 can include a cap 214. The cap 214 can include aproximal end 216 and a distal end 218. The cap 214 can include alongitudinal axis 220. In some positions of the end cap 202, thelongitudinal axis 208 of the fastener 204 can be coaxial with thelongitudinal axis 220 of the cap 214. In some embodiments, the cap 214can be pivoted relative to the fastener 204. The cap 214 and thefastener 204 can have polyaxial movement therebetween such that thelongitudinal axis 208 of the fastener 204 is not coaxial with thelongitudinal axis 220 of the cap 214.

Referring to FIG. 8, the cap 214 can have an interior surface 222. Theinterior surface 222 can be curved. The interior surface 222 can bespherical or generally spherical. The interior surface 222 can beconical or generally conical. In some embodiments, the interior surface222 can be tapered inward from the proximal end 216 of the cap 214 tothe distal end 218 of the cap 214. In some embodiments, the diameter ofthe interior surface 222 near the proximal end 216 of the cap 214 isgreater than a diameter near the distal end 218 of the cap 214.

The cap 214 can have an exterior surface 224. The exterior surface 224of the cap 214 can be curved. The exterior surface 224 of the cap 214can be spherical or generally spherical. The exterior surface 224 of thecap 214 can be conical or generally conical. In some embodiments, theexterior surface 224 of the cap 214 can tapered outward from theproximal end 216 of the cap 214 to the distal end 218 of the cap 214. Insome embodiments, the diameter of the exterior surface 224 near theproximal end 216 of the cap 214 is less than a diameter of the exteriorsurface 224 near the distal end 218 of the cap 214. The exterior surface224 of the cap 214 can include one or more curved edges 226. The curvededges 226 can be located near the distal end 218 of the cap 214. In somemethods of use, the distal end 218 of the cap 214 can abut the proximalend of the fixation device 100. In some methods of use, the distal end218 of the cap 214 can abut the anatomy of the patient. In some methodsof use, the distal end 218 of the cap 214 can abut tissue or bone nearthe tuberosity of the fifth metatarsal.

The fastener head 210 of the fastener 204 can be inserted into the cap214. The fastener head 210 can be inserted into the proximal end 216 ofthe cap 214. The thread 206 can extend from the distal end 218 of thecap 214 when the fastener head 210 of the fastener 204 is insertedwithin the cap 214. The fastener head 210 can have an exterior surface234. The exterior surface 334 of the fastener head 210 can be curved.The exterior surface 334 of the fastener head 210 can be spherical orgenerally spherical. The exterior surface 334 of the fastener head 210can be conical or generally conical. In some embodiments, the exteriorsurface 334 of the fastener head 210 can be tapered inward. The interiorsurface 222 of the cap 214 can match or substantially match the exteriorsurface 234 of the fastener head 210.

The cap 214 can include one or more features to retain the fastener head210 within the cap 214. The cap 214 can include a lip 230. The lip 230can form an opening with a smaller diameter than the maximum diameter ofthe fastener head 210. The lip 230 can prevent the fastener 204 frombacking out of the cap 214. In some embodiments, the cap 214 isflexible. In some embodiments, a portion of the cap such as the proximalend 216 or the lip 230 is flexible. The flexibility can allow thefastener 204 to pass in the distal direction over the lip 230. Theflexibility can allow the lip 230 to snap back after the fastener 204 isplaced within the cap 214.

In some embodiments, the lip 230 can limit translation between thefastener 204 and the cap 214 when the fastener is disposed within thecap 214. In some embodiments, a degree of translation can be permittedbetween the fastener 204 and the cap 214 when the fastener 204 isdisposed within the cap 214. The interior surface 222 of the cap 214distal to the lip 230 can be sized to allow translation between thefastener 204 and the cap 214. In some embodiments, the translationbetween the fastener 204 and the cap 214 can occur along thelongitudinal axis 208. In some embodiments, the translation between thefastener 204 and the cap 214 can occur along the longitudinal axis 220.In some embodiments, the longitudinal axis 208 of the fastener 204 canbe coaxial with the longitudinal axis 220 of the cap 214 duringtranslation. In some embodiments, the longitudinal axis 208 of thefastener 204 is not coaxial with the longitudinal axis 220 of the cap214 during translation.

In some embodiments, the fastener head 210 and the cap 214 can rotaterelative to each other. In some embodiments, a degree of rotation can bepermitted between the fastener 204 and the cap 214 when the fastener 204is disposed within the cap 214. In some embodiments, the fastener head210 and the cap 214 can rotate 360 degrees relative to each other. Insome embodiments, the fastener head 210 and the cap 214 can rotate lessthan 360 degrees relative to each other (e.g., 90 degree, 180 degrees,etc.). The interior surface 222 of the cap 214 distal to the lip 230 canbe sized to allow rotation between the fastener 204 and the cap 214. Insome embodiments, the rotation between the fastener 204 and the cap 214can occur along the longitudinal axis 208. In some embodiments, therotation between the fastener 204 and the cap 214 can occur along thelongitudinal axis 220. In some embodiments, the longitudinal axis 208 ofthe fastener 204 can be coaxial with the longitudinal axis 220 of thecap 214 during rotation. In some embodiments, the longitudinal axis 208of the fastener 204 is not coaxial with the longitudinal axis 220 of thecap 214 during rotation.

In some embodiments, the fastener head 210 and the cap 214 can pivotrelative to each other. In some embodiments, the fastener head 210 andthe cap 214 can have polyaxial movement therebetween. In someembodiments, a degree of pivoting can be permitted between the fastener204 and the cap 214 when the fastener 204 is disposed within the cap214. The interior surface 222 of the cap 214 distal to the lip 230 canbe sized to allow polyaxial movement between the fastener 204 and thecap 214. The polyaxial movement can include any angulation between thefastener head 210 and the cap 214. As described herein, the fastener 204can have the longitudinal axis 208 and the cap 214 can have thelongitudinal axis 220. The longitudinal axis 208 of the fastener 204 canform any angle with the longitudinal axis 220 of the cap 214 duringpolyaxial movement. The angle can be 5 degrees, 10 degrees, 15 degrees,20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees,50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees,80 degrees, 85 degrees, 90 degrees, 120 degrees, 150 degrees, 180degrees, 210 degrees, 240 degrees, 270 degrees, between 0 and 30degrees, between 30 and 60 degrees, between 60 and 90 degrees, greaterthan 90 degrees, greater than 120 degrees, greater than 150 degrees,etc. The longitudinal axis 208 of the fastener 204 can be skewedrelative to the longitudinal axis 220 of the cap 214.

The design of the fastener head 210 and the cap 214 can facilitatetranslation between the fastener head 210 and the cap 214. The design ofthe fastener head 210 and the cap 214 can facilitate rotation betweenthe fastener head 210 and the cap 214. The design of the fastener head210 and the cap 214 can facilitate polyaxial movement or pivotingbetween the fastener head 210 and the cap 214.

The fastener 204 can include a middle section 236. The middle section236 can be disposed between the fastener head 210 and the thread 206.The middle section 236 can be disposed within fixation device 100 whenthe fixation device is implanted within the fifth metatarsal. The middlesection 236 can be disposed within the threaded portion 142 of thefixation device 100 when the fastener 204 is coupled to the fixationdevice 100. The middle section 236 can be disposed within the secondthreaded section 146 of the threaded portion 142 of the fixation device100, as described herein. The fastener 204 can include a lumen 240. Thelumen 240 can allow the fastener 204 to be inserted over a guide wire,as described herein. The lumen 240 can allow the end cap 202 to beinserted over a guide wire, as described herein.

FIGS. 9 and 10 show a second embodiment of an end cap 242. The end cap242 can include any of the features of the end cap 202. The end cap 242can include a long fastener 404. The long fastener 404 can include anyof the features of the fastener 204 described herein. The long fastener404 can include the thread 206. The thread 206 can engage the firstthreaded portion 144 of the fixation device 100, as shown in FIG. 6. Thelong fastener 404 can include the fastener head 210. The fastener head210 can include the socket 212. The long fastener 404 can have thelongitudinal axis 208. The long fastener 404 can include the middlesection 236. The long fastener 404 can include a length extendingsection 406. The length extending section 406 can be disposed betweenthe middle section 236 and the fastener head 210. The length extendingsection 406 can increase the length of the long fastener 404 along thelongitudinal axis 208. The length extending section 406 is shown indashed lines, since the length extending section 406 is disposed withina cap 244.

The end cap 242 can include the cap 244. The cap 244 can include any ofthe features of the cap 214. The cap 244 can include an interior surface246 (not shown). The interior surface 246 can match or substantiallymatch the interior surface 222 shown in FIG. 8. The cap 244 can includea mechanism to retain the fastener 404, such as lip 230 shown in FIG. 8.The interior surface 246 can include any of the features describedherein to allow translation, rotation, and/or polyaxial movement betweenthe fastener head 210 and the cap 244.

The cap 244 can include an exterior surface 250. The exterior surface250 can include a first section 252 and second section 254. The cap 244can include a proximal end 256 and a distal end 258. The first section252 can be located proximal to the second section 254. The first section252 of the exterior surface 250 can be curved. The first section 252 ofthe exterior surface 250 can be spherical or generally spherical. Thefirst section 252 of the exterior surface 250 can be conical orgenerally conical. In some embodiments, the first section 252 of theexterior surface 250 can be tapered outward from the proximal end 256 ofthe cap 244 toward the distal end 258 of the cap 244.

The second section 254 can increase the length of the cap 244. In someembodiments, the length of the second section 254 can correspond to thelength of the length extending section 406 of the long fastener 404. Thesecond section 254 can include a cylindrical boss. The second section254 can include any shape including cylinder, triangular prism,triangular pyramid, cube, square prism, square pyramid, rectangularprism, sphere, cone, hexagonal prism, polygonal prism, polygonalpyramid, etc. The second section 254 can extend distally from the firstsection 252. In some embodiments, the second section 254 limitspolyaxial movement between the fastener 204 and the cap 244. In someembodiments, the second section 254 abuts the proximal end 102 of thefixation device 100.

The length extending section 406 of the long fastener 404 can bedisposed within the second section 254 of the cap 244 when the fastener404 is disposed within the cap 244. The middle section 236 of the longfastener 404 can extend from the second section 254 of the cap 244 whenthe fastener 404 is disposed within the cap 244. The middle section 236of the long fastener 236 can be disposed the second threaded section 146when the fastener 404 is coupled to the fixation device 100. Thefastener head 210 can be disposed within the first section 252 when thefastener 404 is disposed within the cap 244.

FIGS. 11 and 12 show a third embodiment of an end cap 262. The end cap262 can include any of the features of the end caps 202, 242. The endcap 262 can include the fastener 204. In some embodiments, the end cap262 can include the long fastener 404. The fastener 204 can include thethread 206, the fastener head 210 with the socket 212, and the middlesection 236. The fastener 202 can have the longitudinal axis 208. Theend cap 262 can include the cap 264. The cap 264 can include any of thefeatures of the cap 214. The cap 264 can include an interior surface 266(not shown). The interior surface 266 can match or substantially matchthe interior surface 222 shown in FIG. 8. The cap 264 can include amechanism to retain the fastener 204, such as lip 230 shown in FIG. 8.The interior surface 266 can include any of the features describedherein to allow translation, rotation, and/or polyaxial movement betweenthe fastener head 210 and the cap 264.

The cap 264 can include an exterior surface 270. The cap 264 can includea proximal end 276 and a distal end 278. When viewed from the proximalend 276, the cap 264 can be ovoid. When viewed from the proximal end276, the cap 264 can have a generally circular, oval, elliptical orother rounded shaped. Other configurations are contemplated. When viewedfrom the proximal end 276, the cap 264 can have a triangular,rectangular, square or other polygonal shape.

The cap 264 can include a first section 272 and a second section 274.The first section 272 and the second section 274 can be at the samelongitudinal position along the longitudinal axis 208. The first section272 can receive the fastener head 210. The first section 272 can includethe interior surface 266. The maximum diameter of the second section 274can be larger than the maximum diameter of the first section 272. Thesecond section 274 can taper from the proximal end 276 of the cap 264 tothe distal end 278 of the cap 264. The second section 274 can form asmooth arc from the proximal end 276 of the cap 264 to the distal end278 of the cap 264. The second section 274 can be designed to engage ananatomical feature or landmark as described herein. The second section274 can be designed to match or substantially match the anatomy of apatient.

The cap 264 can include a projection 280. The projection 280 can belocated in the second section 274. The projection 280 can include acylindrical projection. The projection 280 can include any shapeincluding cylinder, triangular prism, triangular pyramid, cube, squareprism, square pyramid, rectangular prism, sphere, cone, hexagonal prism,polygonal prism, polygonal pyramid, etc. The projection 280 can extenddistally from the cap 262. The projection 280 can extend distally fromthe second section 274. The projection 280 can be designed to engage ananatomical feature or landmark.

FIGS. 13 and 14 show a fourth embodiment of an end cap 282. The end cap282 can include any of the features of the end cap 202, 242, 262. Theend cap 282 can include the fastener 204. In some embodiments, end cap282 can include the long fastener 404. The fastener 204 can include thethread 206, the fastener head 210 with the socket 212, and the middlesection 236. The fastener 204 can have the longitudinal axis 208. Theend cap 282 can include the cap 284. The cap 284 can include any of thefeatures of the cap 214. The cap 284 can include an interior surface 286(not shown). The interior surface 286 can match or substantially matchthe interior surface 222 shown in FIG. 8. The cap 284 can include amechanism to retain the fastener 204, such as lip 230 shown in FIG. 8.The interior surface 286 can include any of the features describedherein to allow translation, rotation, and/or polyaxial movement betweenthe fastener head 210 and the cap 284.

The cap 284 can include an exterior surface 290. The cap 284 can includea proximal end 296 and a distal end 298. The exterior surface 290 of thecap 284 can be curved. The exterior surface 290 of the cap 284 can bespherical or generally spherical. The exterior surface 290 of the cap284 can be conical or generally conical. In some embodiments, theexterior surface 290 of the cap 284 can tapered inward from the proximalend 296 of the cap 284 to the distal end 298 of the cap 284. In someembodiments, the diameter of the exterior surface 290 near the proximalend 296 of the cap 284 is greater than a diameter of the exteriorsurface 290 near the distal end 298 of the cap 284. The cap 284 can becylindrical or generally cylindrical.

The exterior surface 290 of the cap 284 can include one or more grooves292. In the illustrated embodiment, the cap 284 can include six grooves,but other configurations are contemplated (e.g., one groove, twogrooves, three grooves, four grooves, five grooves, seven grooves, eightgrooves, nine grooves, ten grooves, a plurality of grooves, etc.). Inthe illustrated embodiment, each groove 292 is the same. The groove 292can extend from the proximal end 286 or near the proximal end 296. Thegroove 292 can be triangular, square, or other polygonal shape. Thegroove 292 can be tapered from the proximal end 296 to the distal end298. The grooves 292 can include one or more sharpened edges. The one ormore grooves 292 can allow the cap to self-countersink. The one or moregrooves 292 can function as a cutting surface to drive the cap 284 intobone. The cap 284 can be considered a headless cap. The cap 284 caninclude one or more features that allow the cap 284 to advance into thebone.

FIGS. 15 and 16 show a fifth embodiment of an end cap 302. The end cap302 can include any of the features of the end cap 202, 242, 262, 282.The end cap 302 can include the fastener 204. In some embodiments, endcap 302 can include the long fastener 404. The fastener 204 can includethe thread 206, the fastener head 210 with the socket 212, and themiddle section 236. The middle section can be disposed within the endcap 302. The fastener 202 can have the longitudinal axis 208. The endcap 302 can include the cap 304. The cap 304 can include any of thefeatures of the cap 214. The cap 304 can include an interior surface 306(not shown). The interior surface 306 can match or substantially matchthe interior surface 222 shown in FIG. 8. The cap 304 can include amechanism to retain the fastener 204, such as lip 230 shown in FIG. 8.The interior surface 266 can include any of the features describedherein to allow translation, rotation, and/or polyaxial movement betweenthe fastener head 210 and the cap 304. The middle section 236, or aportion thereof, can be disposed within the cap 304.

The cap 304 can include an exterior surface 310. The cap 304 can includea first section 312 and a second section 314. The cap 304 can include aproximal end 316 and a distal end 318. The first section 312 can receivethe fastener head 210. The first section 312 can include the interiorsurface 306. The first section 312 can be cylindrical or generallycylindrical. The first section 312 can be curved. The first section 312can be spherical or generally spherical. The first section 312 can beconical or generally conical. In some embodiments, the first section 312can taper inward toward the distal end 318 of the cap 304.

The second section 314 can include one or more hooks 320. The secondsection 314 can extend proximally from the first section 312. Each hook320 can extend proximally toward an apex and then curve distally fromthe apex. The hook 320 can be formed of a strip. The hook 320 caninclude a compound bend. The hook 320 can form a first curve in theproximal distal direction. The hook 320 can form a second curve byflaring outward or tapering inward. The hook 320 can include one or moresharpened edges. The hook can include a pointed tip. The hook 320 can bedesigned to engage an anatomical feature or landmark. The hooks 320 canincrease purchase of the end cap 304 in the head of the bone.

The repair systems described herein can have the following attributes.In some embodiments, the fixation device 100 includes a 5 mm×18 mm hub120. The fixation device 100 can include three distal sizes: 3 mm, 3.8mm, 4.5 mm. The fixation device 100 can include a 10 degree bend. Thebend can be 1 degree, 2 degrees, 3, degrees, 4 degrees, 5 degrees, 6degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 15 degrees, 20degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80degrees, 85 degrees, 90 degrees, between 1 and 10 degrees, between 1 and20 degrees, between 1 and 30 degrees, greater than 5 degrees, greaterthan 10 degrees, greater than 15 degrees, greater than 20 degrees, lessthan 20 degrees, less than 15 degrees, less than 10 degrees, etc. Theoverall length of the fixation device 100 and/or the repair system 200can be between 40 mm and 60 mm. The length can be adjusted by varyingthe distal portion 110.

Any of the end caps described herein can include a length extendingsection. FIGS. 9 and 10 show an example of a length extending section.The second section 254 can be considered a length extending section. Asone example, the second section 254 can include a cylindrical boss. Thelength extending section can have a greater diameter than the thread 206of the fastener 204 and the long fastener 404. As described herein, thethread 206 of the fastener 204 and the long fastener 404 can be designedto be inserted within the fixation device 100. The thread 206 can bedesigned to engage the threaded portion 142 of the fixation device 100.The thread 206 can be designed to engage the first threaded section 144of the threaded portion 142 of the fixation device 100.

As described herein, the middle section 236 of the fastener 204 and thelong fastener 404 can be designed to be inserted within the fixationdevice 100. The middle section 236 can be designed to be disposed withinthe threaded portion 142 of the of the fixation device 100 when thefastener 204 is coupled to the fixation device 100. The middle section236 can be designed to be disposed within the second threaded section146 of the of the fixation device 100. The middle section 236 can bedesigned to be disposed within the second threaded section 146 of thethreaded portion 142.

Any of the end caps described herein can include the fastener 204 or thelong fastener 404. The long fastener 404 can include any of the featuresof the fastener 204, described herein. The long fastener 404 can includethe length extending section 406. The length extending section 406 canbe disposed between the middle section 236 and the fastener head 210.The length extending section 406 can increase the length of the longfastener 404 along the longitudinal axis 208. The fastener 204 can beconsidered a standard fastener.

FIGS. 17-22 show an embodiment of an insertion tool 410. The insertiontool 410 can be designed to couple with the fixation device 100. Theinsertion tool 410 can be designed to insert the fixation device 100 tothe proper depth within bone. The insertion tool 410 can be designed toinsert the fixation device 100 to the proper depth based on thecorresponding end cap. The insertion tool 410 can be designed to insertthe fixation device 100 to the proper depth based on the correspondingcap design or fastener design.

Referring to FIGS. 17-19, the insertion tool 410 can include an elongatemember 412. The elongate member 412 can include a lumen 414, as shown inFIG. 19. The elongate member 412 can include a corresponding engagementmember 416. The corresponding engagement member 416 of the insertiontool 410 can be complementary in shape to the engagement member 122 ofthe fixation device 100. The engagement member 122 and the correspondingengagement member 416 can be an anti-rotation feature between thefixation device 100 and the insertion tool 410. The engagement member122 can include one or more slots. The corresponding engagement member416 can be one or more flanges. In the illustrated embodiment, thecorresponding engagement member 416 includes a pair of flanges. Thecorresponding engagement member 416 of the insertion tool 410 can bedesigned to engage the engagement member 122 of the fixation device 100to couple the insertion tool 410 to the fixation device 100. Theengagement member 122 of the fixation device 100 can be located at aproximal end 102 of the fixation device 100, as shown in FIG. 1.

The insertion tool 410 can include a shaft 420. The shaft 420 can besized to be disposed within the lumen 414 of the elongate member 412.The shaft 420 can include a handle 422. The handle 422 can rotate theshaft 420 within the lumen 414 of the elongate member 412. The shaft 420can include a thread 424. The thread 424 can be designed to engage thesecond threaded section 146 of the fixation device 100, as shown in FIG.5. The second threaded section 146 can be located near the proximal end102 of the fixation device 100. In some methods of use, the elongatemember 412 engages the fixation device 100 before the shaft 420 engagesthe fixation device 100. In some methods, the thread 424 of the shaft420 engages the second threaded section 146 of the fixation device 100after the corresponding engagement feature 416 of the elongate member412 engages the engagement member 122 of the fixation device 100. Theshaft 420 can be cannulated. The shaft 420 can include the lumen 426.

The insertion tool 410 can include a sleeve 430. The sleeve 430 caninclude a lumen 436. The elongate member 412 can be disposed within thelumen 436 of the sleeve 430.

The sleeve 430 can include a handle 440. In the illustrated embodiment,the handle 440 can extend from the side surface of the sleeve 430. Insome embodiments, the elongate member 412 is fixed relative to thehandle 440 of the sleeve 430. Referring to FIG. 19, the insertion tool410 can include a fastener 442 designed to couple the elongate member412 and handle 440 of the sleeve 430. The sleeve 430 can include a cover444. The cover 444 can extend distally from the handle 440. The cover444 can enclose, or partially enclose, one or more internal componentsconfigured to adjust the length of the sleeve 430. The cover 444 canenclose a spring 446.

The sleeve 430 can include a slider 450. The slider 450 can be designedto be pulled by the user. The slider 450 can be designed to translate inthe proximal-distal direction. The slider 450 can be designed to rotatewith respect to the handle 440. The slider 450 can be designed totranslate relative to the elongate member 412. The slider 450 can bedesigned to rotate with respect to the elongate member 412. The slider450 can include a proximal end 452 and a distal end 454.

The slider 450 can include one or more flanges 456. The flange 456 canbe located at or near the proximal end 452 of the slider 450. In theillustrated embodiment, the slider 450 includes a pair of flanges 456.The distal end 454 of the slider 450 can include a curved or blunt edge.The distal end 454 can be designed to abut bone, as described herein.

Referring to FIG. 20, the cover 444 has been removed from the sleeve430. The sleeve 430 can include a block 460. The block 460 can bedesigned to interact with the proximal end 452 of the slider 450. Theblock 460 can include one or more grooves 462. The one or more flanges456 can be disposed in the one or more grooves 462 when the insertiondevice 410 is in a standard position, as shown in FIG. 20. A singleflange 456 can be disposed in a single groove 462 in the standardposition. The pair of grooves 462 can be diametrically opposed. Theblock 460 can include one or more slots 464. The one or more flanges 456can be disposed in the one or more slots 464 when the insertion device410 is in a long position, as shown in FIG. 21. A single flange 456 canbe disposed in a single slot 464 in the long position. The pair of slots464 can be diametrically opposed. The spring 446 can bias the flange 456toward the block 460.

Each groove 462 extends from the distal end of the block 460 to adistance DS. Each slot extends from the distal end of the block 460 to adistance DL. The different between DS and DL can correspond to thelength extending section. The different between DS and DL can correspondto the length extending section of a cap. The different between DS andDL can correspond to the length extending section of a fastener. Thedifferent between DS and DL can correspond to the difference in lengthbetween the fastener 204 and the long fastener 404.

The user can adjust the slider 450 between the standard position and thelong position. The method can include one or more of the following stepsto move from the standard position to the long position. The user canovercome the biasing force of the spring 446. The user can pull theslider 450 distally. The user can translate the flange 456 relative tothe groove 462. The user can translate the flange 456 distally to removethe flange 456 from the groove 462. In some embodiments, the user canrotate the slider 450. The user can rotate the slider 450 approximatelyninety degrees. The user can rotate the slider 450 approximately aquarter turn. In some embodiments, the user can rotate the handle 440.The user can rotate the handle 440 approximately ninety degrees. Theuser can rotate the handle 440 approximately a quarter turn. The usercan release the slider 450. The biasing force of the spring 464 canposition the flange 456 within the slot 464. The user can adjust theslider 450 between the long position and the standard position byreversing one or more of the previous steps.

The distal end 454 of the slider 450 can change positions between thestandard position and the long position. The distal end 454 of theslider 450 can be positioned further away from the correspondingengagement feature 416 in the long position. The slider 450 can expose agreater length of the elongate member 412 in the long position. In thestandard position, the distance of the exposed elongate member 412 isES. In the long position, the distance of the exposed elongate member412 is EL. The different between ES and EL can correspond to the lengthextending section of a cap. The different between ES and EL cancorrespond to the length extending section of a fastener. The differentbetween ES and EL can correspond to the difference in length between thefastener 204 and the long fastener 404. In the standard portion, theproximal end 102 of the fixation device 100 can be a distance away fromthe distal end 454 of the slider 450. In the long position, the proximalend 102 of the fixation device 100 can be further away from the distalend 454 of the slider 450.

Referring to FIG. 22, the sleeve 430 can include one or more markings466 to indicate whether the sleeve 430 is in the standard position orthe long position. The marking 466 can include a symbol, a line, aletter, a word, a color, a protrusion, detent, or any other indicator.In the illustrated embodiment, the cover 444 includes a line. In theillustrated embodiment, the slider 450 includes letters or words (e.g.,abbreviation STD, word LONG). The line on the cover 444 can align withthe abbreviation STD on the slider 450 in the standard position. Theline on the cover 444 can align with the word LONG on the slider 450 inthe long position, see FIG. 22. In some embodiments, the elongate member412 can include one or more markings (not shown).

FIGS. 23-31 show an embodiment of a drill guide 470. The drill guide 470can include a first cannula 472. The first cannula 472 can be sized toaccept a K-wire, as described herein. The first cannula 472 can beangled relative to the drill guide 470. The first cannula 472 can beangled to facilitate placement of the K-wire.

The drill guide 470 can include a second cannula 474. The second cannula474 can be sized to accept a reamer, as described herein. The secondcannula 474 can be sized to accept a 5.2 mm reamer. The second cannula474 can be angled relative to the drill guide 470. The second cannula474 can be angled to facilitate placement of the reamer. The firstcannula 472 can be located on one side of the drill guide 470 and thesecond cannula 474 can be located on the opposite side of the drillguide 470. The through axis of the first cannula 472 and the throughaxis of the second cannula 474 can for an enclosed angle. The enclosedangle can be 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees,30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees,60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, 85 degrees,90 degrees, between 0 and 30 degrees, between 30 and 60 degrees, between60 and 90 degrees, greater than 90 degrees, greater than 120 degrees,greater than 150 degrees, etc. The through axis of the first cannula 472and the through axis of the second cannula 474 can be skewed.

The drill guide 470 can include a slider 476. The slider 476 can changepositions between the standard position and the long position. Theslider 476 can be positioned closer to the second cannula 474 in thestandard position. The slider 476 can be positioned further away fromthe second cannula 474 in the long position.

FIGS. 23-26 show the slider 470 in the standard position. The slider 476can include an opening 480. The opening 480 can be curved. The opening480 can be semi-circular. The slider 470 can include one or moremarkings 482 to indicate whether the slider 470 is in the standardposition or the long position. The marking 482 can include a symbol, aline, a letter, a word, a color, a protrusion, detent, or any otherindicator. In the illustrated embodiment, the slider 470 includes anarrow to indicate the direction of movement for slider 470 to be movedto the standard position. In the illustrated embodiment, the slider 470includes an arrow to indicate the direction of movement for slider 470to be moved to the long position. The markings 482 can include theabbreviation STD for the standard position and the word LONG for thelong position. The markings 482 can include the size of the reamerassociated with the second cannula 474.

FIG. 26 shows a reamer 484. The reamer 484 can include a shaft 486. Theshaft 486 can be sized to fit within the opening 480 of the slider 476.The opening 480 can accommodate the shaft 486 of the reamer 484, or aportion thereof, when the reamer 484 is disposed within the secondcannula 474. The reamer 484 can include a stop 490. The stop 490 can bedesigned to abut the slider 476. The stop 490 can limit movement of theshaft 486 of the reamer 484 through the opening 480 of the slider 476.

FIG. 27-28 show the location of the slider 476 in the long position. Thereamer 484 can include the stop 490. In the long position, the stop 490can abut the second cannula 474. The stop 490 does not abut the slider476. The slider 476 can be positioned away from the reamer 484 when thereamer 484 is positioned within the second cannula 474.

The position of the reamer 484 beyond the second cannula 474 in thestandard position is labeled GS. The position of the reamer 484 beyondthe second cannula 474 in the long position is labeled GL. The differentbetween GS and GL can correspond to the length extending section of acap. The different between GS and GL can correspond to the lengthextending section of a fastener. The different between GS and GL cancorrespond to the difference in length between the fastener 204 and thelong fastener 404. The position of the reamer 484 beyond the secondcannula 474 can correspond to a countersink distance. The countersink inthe long position can be greater than the countersink in the standardposition.

FIGS. 29-31 show views of the drill guide 470. The drill guide 470 caninclude a spring 492. The spring 492 can bias the slider 476 toward thestandard position. The slider 476 can include a mating feature 494. Themating feature 494 can be a tongue. The mating feature 494 can be atapered projection. The drill guide 470 can include an arm 496. The arm496 can couple first cannula 472 and the second cannula 474. The arm 496can include a corresponding mating feature 498. The corresponding matingfeature 498 can be a groove. The corresponding mating feature 498 can bea tapered recess. The mating feature 494 and the corresponding matingfeature 498 can form a dovetail joint. The mating feature 494 and thecorresponding mating feature 498 can interlock. The mating feature 494and the corresponding mating feature 498 can allow the slider 476 toslide relative to the arm 496. The mating feature 494 and thecorresponding mating feature 498 can prevent disengagement between theslider 476 and the arm 496.

FIGS. 32-44 show various method steps related to the fifth metatarsal.FIGS. 32-39B generally show method steps related to installing repairsystems. FIGS. 40-44 generally show method steps related to removingrepair systems. A surgical method can include one or more of thefollowing steps. One or more of the following steps can be performed inany order. While the following method steps relate to the fifthmetatarsal, one or more the method steps can apply to any bone of thehuman body.

The fifth metatarsal is a bone of the foot located on the outside edgeof the foot. The fifth metatarsal has a tuberosity or styloid process.The fifth metatarsal can include an intramedullary canal. A Jonesfracture is a type of injury to the base of the metatarsal. Apseudo-Jones fracture is a type of injury to the tuberosity. The fifthmetatarsal can experience other injuries including stress fractures. Thefigures can generally show a fracture F. The fracture F can include oneor more bone fragments.

FIG. 32 shows a method step of establishing an entry point. The user canestablish an entry point using a K-wire 502. In some methods of use, a1.6 mm K-wire is used. The K-wire can be positioned at the tip of thefifth metatarsal tuberosity. The K-wire 502 can form a canal in thefifth metatarsal. The K-wire 502 can be advanced into the intramedullarycanal of the fifth metatarsal. FIG. 32 shows the first cannula 472 ofthe drill guide 470. The K-wire 502 can be inserted into the firstcannula 472 of the drill guide 470. The first cannula 472 can include adistal surface 478 configured to abut bone. Referring back to FIG. 24,the distal surface 478 can include one or more projections to increasegrip of the bone. The first cannula 472 can define the trajectory of theK-wire 502, when the distal surface 504 abuts bone. FIG. 32 shows afracture F. The K-wire can be positioned across the fracture F. Thefirst cannula 472 can include a distal surface 478 configured to abutbone.

FIGS. 33A-33B show method steps related to using the reamer 484. Theuser can use the reamer 484 to ream the fifth metatarsal. The user canuse the reamer 484 to ream the tissue surrounding the fifth metatarsal.In some methods of use, a 5.2 mm reamer is used. The reamer 484 can forma canal in the fifth metatarsal. The reamer 484 can be advanced into theintramedullary canal of the fifth metatarsal. The reamer 484 can form acounter bore which is greater in diameter than the intramedullary canalof the fifth metatarsal.

The user can rotate the drill guide 470 from the position shown in FIG.32. The user can position the second cannula 474 over the K-wire 502.The second cannula 474 can include a distal surface 506 configured toabut bone. The second cannula 474 can define the trajectory of thereamer 484, when the distal surface 506 abuts bone. The user canposition the reamer 484 over the K-wire 502. The reamer 484 can becannulated. The user can translate the reamer 484 along the K-wire 502.The user can translate the shaft 486 of the reamer 484 through theopening 480 of the slider 476. The user can ream the proximal entryportal. The reamer 484 can be positioned across the fracture F.

FIG. 33A shows a method step wherein the slider 476 is in the standardposition. The user can slide the slider 476 along the arm 496 until theslider 476 is in the standard position. In some methods of use, thespring 492 shown in FIG. 29 biases the slider 476 toward the standardposition. The stop 490 of the reamer 484 abuts the opening 480 in theslider 476. The reamer 484 penetrates a distance GS when the stop 490 ofthe reamer 484 abuts the slider 476. FIG. 33A shows a method step wherethe user reams a first depth GS corresponding to the standard position.

FIG. 33B shows a method step wherein the slider 476 is in the longposition. The user can slide the slider 476 along the arm 496 until theslider 476 is in the long position. In some methods of use, the spring492 biases the slider 476 toward the standard position as described withrespect to FIG. 29. The user can overcome the biasing force of thespring 492 to position the slider 476 in the long position. The slider476 can be moved away from the second cannula 474. The slider 476 can bemoved away from the reamer 484. The stop 490 of the reamer 484 can abutthe second cannula 474. FIG. 33B shows a method step where the userdrills a second depth GL corresponding to the long position. Asdescribed herein, the countersink depth GL can be greater than thecountersink depth GS. The reamer 484 can penetrate a distance GL whenthe stop 490 of the reamer 484 abuts the second cannula 474. Thedifferences between GS and GL can be 4 mm. The user can incrementallyream until the stop 490 of the reamer 484 abuts a structure therebylimiting the depth of penetration.

FIGS. 34A-34B show method steps related to incrementally reaming. Theuser can remove the reamer 484 from the second cannula 474. The user canposition a second reamer 510 over the K-wire 502. The user can translatethe second reamer 510 along the K-wire 502. The user can translate ashaft 514 of the second reamer 510 through the opening 480 of the slider476. The second reamer 510 can translated within the second cannula 474of the insertion tool 410. The second reamer 510 can be positioned inthe second cannula 474 after the reamer 484 is removed from the secondcannula 474.

The second reamer 510 can form a canal in the fifth metatarsal. Thesecond reamer 510 can be advanced into the intramedullary canal of thefifth metatarsal. The second reamer 510 can form a bore which is greaterin diameter than the intramedullary canal of the fifth metatarsal. Thesecond reamer 510 can incrementally ream the intramedullary canal. Asdescribed herein, the reamer 484 can ream a proximal portion orcountersink portion. The second reamer 510 can ream a distal canal. Thesecond reamer 510 can incrementally ream a distance corresponding to thelength of the fixation device 100 from the proximal end 102 to thedistal end 104. The diameter of the fixation device 100 can be slightlysmaller than the final reamer diameter. The final reamer diameter can be0.2 mm greater than the diameter of the fixation device 100. The finalreamer diameter can be 0.2 mm greater than the diameter of the distalportion 110 of the fixation device 100. The final reamer diameter can be0.2 mm greater than the diameter of the hub 120 of the fixation device100. The user can ream to the proper depth. The second reamer 510 can bepositioned across the fracture F.

In some embodiments, the second reamer 510 can include a stop 512. Insome embodiments, the stop 512 of the second reamer 510 can be designedto abut the slider 476 in the standard position. In some embodiments,the stop 512 of the second reamer 510 can be designed to abut the secondcannula 474 in the long position. The user can select between thestandard position and the long position by moving the slider 476 alongthe arm 496. The user can incrementally ream until the stop 512 of thesecond reamer 510 abuts a structure thereby limiting the depth ofpenetration. FIGS. 34A-34B show method steps wherein the slider 476 isin the standard position. In some methods, the user moves the slider 476away from the second cannula 474. The user incrementally reams until thestop 512 of the reamer abuts the second cannula in the long position.

FIGS. 35A-35B show method steps related to inserting the fixation device100. The user can remove the drill guide 470. The user can assemble theinsertion tool 410. The user can couple the fixation device 100 to theinsertion tool 410. The user can align the corresponding engagementmember 416 of the elongate member 412 with the engagement member 122 ofthe fixation device 100. The engagement member 122 and the correspondingengagement member 416 can limit rotation between the insertion tool 410and the fixation device 100. Referring back to FIGS. 17 and 19, the usercan insert the shaft 420 into the lumen 414 of the elongate member 412.The thread 424 of the shaft 420 can extend distally from the elongatemember 412. The thread 424 can engage the second threaded section 146 ofthe fixation device 100 to couple the insertion tool 410 to the fixationdevice 100.

The user can adjust the insertion tool 410 between the standard positionand the long position. The user can grasp the slider 450. Referring backto FIG. 20, the user can pull the slider 450 distally such that theflange 456 translates distally. The user can pull the slider 450distally such that the flange 456 translates distally to disengage thegroove 462. The user can rotate the slider 450. The user can rotate theslider 450 to align the flange 456 with the slot 464. The user can pushthe slider 450 proximally. In some embodiments, the user releases theslider 450 and the spring 446 biases the flange 456 into the slot 464.The user can pull the slider 450 distally such that the flange 456translates distally to disengage the slot 464. The user can rotate theslider 450 to align the flange 456 with the groove 462. In someembodiments, the user releases the slider 450 and the spring 446 biasesthe flange 456 into the groove 462.

The distal end 454 of the slider 450 can be designed to engage the edgeof the fifth metatarsal. The distal end 454 of the slide 450 can bedesigned to limit insertion of the fixation device 100. FIG. 34A showsthe position of the fixation device 100 when the flange 456 engages thegroove 462. FIG. 34A shows the position of the fixation device 100 whenthe slider 450 is in the standard position. FIG. 34B shows the positionof the fixation device 100 when the flange 456 engages the slot 464.FIG. 34B shows the position of the fixation device 100 when the slider450 is in the long position. The fixation device 100 can be positionedacross the fracture F.

Referring back to FIGS. 33A-33B, the user can select between thestandard position and the long position for the proximal reaming bymoving the slider 476. In some methods of use, the proximal reaming wasperformed to the standard position. The user can set the insertion tool410 to the corresponding standard position. The user can select theposition by pulling and rotating a portion of the insertion tool 410 tothe standard position. The fixation device 100 can be inserted until theinsertion tool 410 abuts bone. FIG. 35A shows the final position of thefixation device 100 in the standard position.

In some methods of use, the proximal reaming was performed to the longposition. The user can set the insertion tool 410 to the correspondinglong position. The user can select the position by pulling and rotatinga portion of the insertion tool 410 to the long position. The fixationdevice 100 can be inserted until the insertion tool 410 abuts bone. FIG.35B shows the final position of the fixation device 100 in the longposition.

FIGS. 35A-35B show an embodiment of an impact cap 516. The impact cap516 can include a cap and a shaft (not shown). The user can strike theimpact cap 516 to seat the fixation device 100. In some embodiments, oneor more light blows to the impact cap 516 can seat the fixation device100. In some methods, the shaft of the impact cap 516 can be insertedthrough the handle 422 and the handle 440. In some methods, the shaft ofthe impact cap 516 can be inserted through the lumen 426 of the shaft420, as shown in FIG. 17.

FIG. 36 shows method steps related to deploying one or more grippers 114of the fixation device 100. The method can include using an actuationdriver 520. The actuation driver 520 can be inserted into the fixationdevice 100 once the fixation device 100 has reached its final position(e.g., the long position or the standard position). The final positionof the fixation device 100 in FIG. 36 is the standard position. Theactuation driver 510 can deploy the grippers 114 when the fixationdevice 100 is in the long position.

Referring back to FIG. 5, the actuation driver 520 can engage the socket136 of the actuator 126. The actuation driver 520 can rotate theelongate member 130 of the actuator 126. As the actuation driver 520 isrotated, the actuator 126 can rotate within the fixation device 100. Asthe actuation driver 520 is rotated, the actuator head 134 can translatetoward the proximal end 102 of the fixation device 100. The actuatorhead 134 can deploy the one or more grippers 114 by translating towardthe proximal end 102 of the fixation device 100.

In some methods, the actuation driver 520 produces an indicator to theuser that the one or more grippers 114 have been deployed. In somemethods, the actuation driver 520 produces an audial indicator, such asa click. In some methods, the indicator is tactile, such as theactuation driver 520 abuts a stop which prevents further rotation. Insome methods, the indicator is visual. The user can rotate the actuationdriver 420 based on one or more markings. As one example, the markingscan indicate the position of the actuation driver 520 relative to thehandle 422 when the one or more grippers 114 are deployed.

In some methods, the shaft of the actuation driver 520 can be insertedthrough the handle 422 and the handle 440. In some methods, the shaft ofthe actuation driver 520 can be inserted through the lumen 426 of theshaft 420, as shown in FIG. 17. In some methods, the actuation driver520 is removed once the grippers 114 are deployed. In some embodiments,the one or more grippers 114 can be deployed distal to the fracture F.

FIG. 37 shows a method step related to inserting a K-wire 522. In somemethods, the K-wire 522 is a 1.25 mm K-wire. In some methods, the shaft420 can be removed. In some methods, the K-wire 522 can be insertedthrough the handle 440 of the insertion tool 410. In some methods, theK-wire 522 can be inserted through the lumen 414 of the elongate member412, as shown in FIG. 19. The K-wire 522 can be inserted into thefixation device 100.

FIGS. 38A-38B show a method steps related to inserting an end cap 202.FIGS. 38A-38B shows the fixation device 100 in the standard position. Insome methods of use, the fixation 100 is in the long position. The endcaps 242, 262, 282, 302 can be inserted in a similar manner. In somemethods, the elongate member 412 is removed. In some methods the K-wire522 protrudes proximally from the fixation device 100. As describedherein, the end cap 202 can be cannulated. The fastener 204 can becannulated. As described herein, the fastener 404 can be cannulated andcan be inserted in a similar manner as fastener 204. The end cap 202 canbe coupled to a driver 526. The driver 526 can be cannulated. The driver526 can be translated along the K-wire 522. The driver 526 and the endcap 202 can be translated along the K-wire 522 toward the fixationdevice 100.

The fastener 204 can engage the fixation device 100. Referring back toFIG. 6, the thread 206 of the fastener 204 can engage the first threadedsection 144 of the fixation device 100 when the driver 526 is rotated.The driver 526 can engage the socket 212 of the fastener head 210 totransmit torque.

The end cap 202 can include the cap 214. In some methods, the cap 214can be translated relative to the fastener head 210. In some methods,the cap 214 can be rotated relative to the fastener head 210. In somemethods, the cap 214 can have polyaxial movement relative to thefastener head 210. The cap 214 can include the exterior surface 224designed to abut the anatomy of the patient. The cap 214 can include thecurved edges 226 designed to abut the surrounding tissue.

The end cap 202 can reduce the fracture as shown in FIG. 38B. As thedriver 526 is rotated, the end cap 202 can apply a force on the bonefragment of the fifth metatarsal. The compressive force can bring two ormore bone fragments of the fifth metatarsal together. FIG. 38B shows theinstalled the fixation device 100 and the end cap 202. In someembodiments, the end cap 202 can be deployed proximal to the fracture F.

FIGS. 39A-39B show various repair systems 200 inserted into the fifthmetatarsal. FIG. 39A shows the fixation device 100 and the end cap 242.In some methods, the user selects end cap 242 or another end cap withthe length extending section. Any of the end caps described herein caninclude a length extending section. Referring back to FIGS. 9 and 10,the end cap 242 includes the second section 254. The second section 254can include a cylindrical boss. The cylindrical boss can be sized to fitwithin the countersink created by the reamer 484 in the long position.The second section 254 can be sized to fit with the fifth metatarsal.The second section 254 can increase the length of the cap 244.

In some methods of use, the user selects the long fastener 404. The longfastener 404 can include the length extending section 406. In someembodiments, the length of the second section 254 of the cap 244 cancorrespond to the length of the length extending section 406 of the longfastener 404. The length extending section 406 of the long fastener 404can be disposed within the second section 254 of the cap 244 when thefastener 404 is disposed within the cap 444.

In some methods of use, the user can select the long position. The longposition can include increasing the depth of the countersink of thereamer 484. The long position can include moving the slider 476 of theof the drill guide 470 to the long position. The long position caninclude abutting the stop 490 of the reamer 484 with the second cannula474. The long position can include adjusting the insertion tool 410. Thelong position can include pulling the slider 450. The long position caninclude rotating the slider 450. The long position can expose a longerlength of the elongate member 412 of the insertion tool 410. In somemethods of use, the user can select the standard position. The standardposition can relate to a shorter countersink produced by the reamer 484.

FIG. 39B shows the fixation device 100 and the end cap 282. In somemethods, the cap 284 self-countersinks into the bone. The driver 524 canrotate the fastener 202. As the fastener 202 is rotated, the cap 284 candrive itself into the bone of the fifth metatarsal. The cap 284 caninclude one or more grooves 292. The grooves 292 can be self-tappingthereby driving the cap 284 into the bone.

FIGS. 40-44 generally show method steps related to removing repairsystems described herein. A surgical method can include one or more ofthe following steps. One or more of the following steps can be performedin any order.

FIG. 40 shows a method step related to the removal of the end cap 202.The driver 524 can be coupled to the fastener 204 or the long fastener404 disposed within the cap 214. The driver 524 can be inserted into thesocket 212 of the fastener 404 or the long fastener 404 as shown inFIGS. 6 and 9. The driver 524 can be rotated. As the driver 524 isrotated, the thread 206 of the fastener 202 or the long fastener 402disengages with the first threaded section 144 of the fixation device100, see FIG. 6. The end caps described herein can be removed in asimilar manner.

FIG. 41 shows a method step related to coupling the insertion tool 410.Referring back to FIGS. 6 and 17, the corresponding engagement member416 of the insertion tool 410 can engage the engagement member 122 ofthe fixation device 100. The shaft 420 can be inserted into the lumen414 of the elongate member 412. The thread 424 of the shaft 420 canengage the second threaded section 146 of the insertion tool 410.

FIGS. 42 and 43 show method steps related to collapsing the one or moregrippers 114 of the fixation device 100. The shaft 530 of the actuationdriver 520 can be inserted into the insertion tool 410. The handle 532of the actuation driver 520 can be coupled to the shaft 530 of theactuation driver 520. Referring back to FIG. 5, the actuation driver 520can engage the actuator 126 within the fixation device 100. Theactuation driver 520 can be rotated to collapse the one or more grippers114. The actuation driver 520 can be rotated clockwise to deploy the oneor more grippers 114 and counterclockwise to collapse the grippers 114.In some methods, the actuator head 134 is translated toward the distalend 104 of the fixation device 100. The actuator head 134 can betranslated such that the actuator head 134 no longer deflects the one ormore grippers 114 outward. The one or more grippers 114 can collapse asthe fixation device 100 is pulled from the fifth metatarsal. In somemethods, fluoroscopy is used to verify that the one or more grippers 114have been collapsed. One or more of the method steps described hereincan be verified by fluoroscopy or other imaging techniques.

FIG. 44 shows a method step related to removing the fixation device 100from the fifth metatarsal. The grippers 114 can be collapsed asdescribed herein. The insertion tool 410 can be pulled to remove thefixation device 100. The fixation device 100 can be removed after thefracture is healed. The fixation device 100 can be removed in a revisionsurgery. The fixation device 100 can be removed after the bone segmentshave fused.

It is contemplated that the fixation device, end caps, repair systems,tools, and methods may be used in many locations within the body. Wherethe proximal end of a device in the anatomical context is the endclosest to the body midline and the distal end in the anatomical contextis the end further from the body midline, for example, on the humerus,at the head of the humerus (located proximal, or nearest the midline ofthe body) or at the lateral or medial epicondyle (located distal, orfurthest away from the midline); on the radius, at the head of theradius (proximal) or the radial styloid process (distal); on the ulna,at the head of the ulna (proximal) or the ulnar styloid process(distal); for the femur, at the greater trochanter (proximal) or thelateral epicondyle or medial epicondyle (distal); for the tibia, at themedial condyle (proximal) or the medial malleolus (distal); for thefibula, at the neck of the fibula (proximal) or the lateral malleoulus(distal); the ribs; the clavicle; the phalanges; the bones of themetacarpus; the bones of the carpus; the bones of themetatarsus; thebones of the tarsus; the sternum and other bones, the device may beadapted and configured with adequate internal dimension to accommodatemechanical fixation of the target bone and to fit within the anatomicalconstraints. As will be appreciated by those skilled in the art, accesslocations other than the ones described herein may also be suitabledepending upon the location and nature of the fracture and the repair tobe achieved. Additionally, the devices taught herein are not limited touse on the long bones listed above, but can also be used in other areasof the body as well, without departing from the scope of the invention.It is within the scope of the invention to adapt the device for use inflat bones as well as long bones.

While various embodiments of the present invention have been shown anddescribed herein, it will be noted by those skilled in the art that suchembodiments are provided by way of example only. Numerous variations,changes, and substitutions may occur to those skilled in the art withoutdeparting from the invention. It should be understood that variousalternatives to the embodiments of the invention described herein may beemployed in practicing the invention. It will be understood that theforegoing is only illustrative of the principles of the invention, andthat various modifications, alterations, and combinations can be made bythose skilled in the art without departing from the scope and spirit ofthe invention. Accordingly, it is not intended that the invention belimited, except as by the appended claims.

The invention claimed is:
 1. A repair system, comprising: a fixationdevice comprising: an elongate body configured to be inserted within afifth metatarsal, the elongate body comprising a bend between 1 and 20degrees separating a substantially straight hub portion having athreaded section from a substantially straight distal portion; anactuator located within the elongate body and including a substantiallystraight proximal portion separated from a substantially straight distalportion by an actuator bend, wherein the actuator bend is configured torotate with the bend of the elongate body; and one or more grippersconfigured to be deflected outward to grip the sidewalls of a canal ofthe fifth metatarsal; and an end cap comprising: a fastener comprising afastener head and a thread configured to engage the threaded section ofthe fixation device; and a cap, wherein the cap is configured to moverelative to the fastener wherein a distal-most end of the cap isconfigured to abut an exterior surface of bone near the tuberosity ofthe fifth metatarsal and the fastener head of the fastener engages thecap at a point outside of the fifth metatarsal.
 2. The repair system ofclaim 1, wherein the end cap is configured for intraoperativecompression.
 3. The repair system of claim 1, wherein the fastener headis captive within the cap.
 4. The repair system of claim 3, wherein aproximal end of the cap includes a lip forming an opening smaller than amaximum diameter of the head of the fastener, and wherein the lip isproximal of a proximal-most end of the head of the fastener.
 5. Therepair system of claim 4, wherein an interior of the cap is tapered suchthat a distal end of the cap forms an opening smaller than the maximumdiameter of the head of the fastener.
 6. The repair system of claim 1,wherein the cap is configured for polyaxial movement relative to thefastener.
 7. The repair system of claim 1, wherein the cap is configuredto rotate relative to the fastener.
 8. The repair system of claim 1,wherein the cap comprises a tapered external surface.
 9. The repairsystem of claim 1, wherein the cap comprises a cylindrical boss.
 10. Therepair system of claim 1, wherein the thread of the fastener isconfigured to extend distally from the cap when the fastener is disposedwithin the cap, and further comprising a projection extending distallyfrom the cap.
 11. The repair system of claim 1, wherein the capcomprises one or more grooves configured to self-tap into the fifthmetatarsal.
 12. The repair system of claim 1, wherein the thread of thefastener is configured to extend distally from the cap when the fasteneris disposed within the cap, the cap further comprising one or more hooksextending proximally.
 13. The repair system of claim 1, wherein the bendis such that a proximal end of the fixation device deviates from alongitudinal axis of the fixation device while the remainder of thefixation device is arranged about the longitudinal axis.
 14. A method ofusing a repair system, comprising: inserting a fixation device within acanal of a fifth metatarsal, wherein the fixation device includes anelongate body having a bend between 1 and 20 degrees separating asubstantially straight hub portion having a threaded section from asubstantially straight distal portion and an actuator located within theelongate body and including a substantially straight proximal portionseparated from a substantially straight distal portion by an actuatorbend, wherein the actuator bend is configured to rotate with the bend ofthe elongate body; coupling an end cap to the fixation device byengaging a fastener head of a fastener of the end cap with a lumen ofthe fixation device, wherein the fastener head of the fastener engagesthe end cap at a point outside of the fifth metatarsal; and adjustingthe position of the end cap relative to the fixation device to applyintra-operative compression to one or more segments of the fifthmetatarsal, wherein a distal-most end of the end cap is configured toabut an exterior surface of bone near the tuberosity of the fifthmetatarsal.
 15. The method of claim 14, further comprising limiting adepth of a counter bore based on the end cap.
 16. The method of claim15, wherein limiting the depth of the counter bore comprises abutting astop of a reamer with a portion of a drill guide.
 17. The method ofclaim 14, further comprising limiting a depth of insertion of thefixation device based on the end cap.
 18. The method of claim 17,wherein limiting the depth of insertion of the fixation device comprisesabutting a sleeve of an insertion tool with the anatomy of a patient.19. The method of claim 17, wherein limiting the depth of insertion ofthe fixation device comprises pulling and rotating a sleeve of aninsertion tool to select the depth of insertion.
 20. The method of claim14, further comprising actuating a gripper to secure the fixation devicewithin an intramedullary canal of the fifth metatarsal.
 21. The methodof claim 14, further comprising rotating a cap of the end cap relativeto the fastener after coupling the end cap to the fixation device. 22.The method of claim 14, further comprising angling a cap of the end caprelative to the fastener after coupling the end cap to the fixationdevice.